You can purchase up to 3 bushels per neighbor every 24 hours, however you can only purchase a maximum of 300 bushels from your neighbors every 24 hours. This 24 hour timer is reset at Midnight EST every day. Bushels are not removed from your inventory when purchased and do not cost anything. You will be rewarded, with a choice of coins, fuel or XP whenever a neighbor purchases bushels from your stall.

There is no number of harvested plots which will guarantee a bushel - Bushels are 100% random. When you find a Bushel, you are rewarded an extra number of them equal to the number of mastery stars you have for the crop you are harvesting.

Super Crops produce more frequent bushels of the same type as the base crop. For example, Super Carrots produce Carrot bushels. As a trade-off, using a bushel does not boost the rate you gain crop mastery for super crops.